Interlocking device for doorlocks and the like



1,614 711 1927' LE GRAND c. BUSH INTERLOCKING DEVICE FOR DOORLOCKS AND THE LIKE Original Filed August 9. 1924 gvwentoz M V liM 7 3391. flbkMfa-Mdi Patented Jan. 18, 1927.

UNITED STATES PATENT OFFICE.

LE GRAND G. BUSH, O1 PHILADELPHIA, PENNSYLVANIA, ASSIGNOB TO ML- TIOHAL 'rnm RECORDING COIPANY NEW YORK, 01 INDICOT'I, m "031, A

CORPORATION 01' NEW YORK.

IN'I'EBLOCKING DEVICE FOR DOOBLOCKS AND THE rm,

Original application fled August 9, 1824, Serial lle. 731,006. Divided and. this application fled 2, 1985. Serial No. 12,504.

The present application is a division of my copendlng application, Serial No. 731,006, filed August 9, 1924.

The present invention has for its objects I the provision of improvements in the interlocking devices for preventing the operations of the main lockv or bolt when supplementary locks or bolts disposed on windows or doors at remote points are in unbolted or unlocked condition. These interlocking door systems are claimed broadly in my former Patent No. 1,270,264. The present construction is directed to an improvement in m former construction making the same relia le by introducing additional advantages not heretofore obtained.

The interlocking arrangement of the pres ent invention is such that a broken wire, an exhausted battery, or poor contact will not prevent the locking of the'main door, and accordingly the interlocking circuit is provided with supplementary lock-control contacts which are normally closed when the supplementary bolts are withdrawn.

In previous constructions, the arrangement of the interlocking circuit was such that the supplementary bolt contacts were normally open with the bolt withdrawn and closed upon the advancement of the su plementary bolts. Provision is also ma e in the interlocking circuit for only efiecting final closure and completion of the circuitby and upon the manipulation of the main lock. In this way the consumption of the battery current is minimized.

A further object of the present invention resides in the provision of a recording mech anism, operating devices therefor, and a bolt structure wherein the locking bolt may be readily reversed for left or right hand operation without the necessity of making extensive changes or modifications in the recording devices.

Further objects and advantages will be hereinafter pointed outin more detail in the accompanying specification and claims and shown in the drawings, which, by way of exemplification, show a preferred embodiment of my invention.

In the drawings,

Fig 1 is a detail view of the interlocking 'ber mechanism showing these parts in moved pos1t1on.

Flg. 2 is a part sectional view of the key barrel mechanism and associated operating ventional pe including a tumbler barrel 20 (Fig. 2 with provisions for receiving Yale lock eys 21. Slidably fitted in the barrel 20 but fixed a ainst rotation there with is a ke 22 w ich in operation is fixedly secure in a combination bolt actuating barrel and key bolt selecting device 23. Barrel 23 is slotted as shown at 26 and has keyed to it a member 27 havin a lug 28 ada ted to engage the notch in tEe lockinrfi be t 30. It wil be understood that the u ocking operation is efiected by turning the parts shown in Fig. 1 by means of the key and bolt barrel in a clockwise direction and that lockin may be eiiected b turning the key and t 6 parts controlle thereby reversely.

Provision is made with the resent device for preventing the locking 0 the door in the event that one or more windows or other doors or locks which may be disposed at oints remote from the main lock are unocked. For this purpose member 27 is provided with a lockm ratchet disk 92 carrying'shoulders or teet 93 (see Fig. 1). Arranged to coo erate with these teeth but normally out o cooperation therewith there is an interlocking pawl 94 which is suitably connected to an armature of an interlockin magnet 95. U on the energization of thls magnet (see 1g. 1) the pawl 94 will be rocked into such position that it will be adapted to engage the teeth 93 and thereby prevent the complete rotation of member 27. Otherwise stated, said interlocking device rmits a partial rotation of the membut prevents such extent of rotation as is necessary to advance the bolt 30. The

initial rotation of member 27 is utilized for effecting the closure of a pair of contacts 96 which are in circuit with the interlocking means to thereby supply the magnet with energy only upon actuationof the bolt actuating member 27. In this way the current is utilized only at such times when there is an attempted manipulation of the bolt. For efiecting closure of the contacts 96 a cam member 97 is provided on member 27, which actuates the pivoted contact actuating lever 98. The contacts 96 normally remain o 11 due to their own resiliency. In Fig. 1 tlifse contacts of cam 97 on member 98 It will be understood that the interlocking devices do not prevent unlocking operations of the door. Referring to Fig. 1, it the part 92 be turned in a clockwise direction, which is the direction of rotation for unlocking. member 94 would ride up upon the slope of the interlocking abutment 93 and would not affect any arresting of the member 92 and the parts connected therewith.

Referring now to the circuit diagram, 99 designates a suitable source of current. Contacts 100 and magnet require no description as these relate to the time recording mechanism of the lock. The'interlocking circuit 101 includes a. plurality of contacts 102 normally biased to open position and adapted to be closed when the bolts or locks of the remote doors or windows are in retracted or open position. These contacts upon the supplementary locks are in multiple in circuit 101 and, consequently, if

any of the remote supplementary lo"ks are.

open or unlocked. current may flow through 101 to the normally opened interlocking contacts 96; then upon the attempted locking of the main door. these contacts will be closedpermitting the interlocking magnet 95 to be energized and thereby preventing the locking of the main door. If all of the contacts 102 are opened showing that all of the remote supplementary locks are locked. the interlocking circuit 101 will be opened and then irrespective of the closure of contacts 96, the interlocking magnet 95 will not be energized and there will be no preventing of the locking of the main door when such operation is attempted.

The contact and circuit arrangement is such that if the battery or source of current 99 is ineffective, for example. if weak or exhausted, the main. door may be locked, since the interlocking circuit does not receive sufficient current to energize theinterlocking magnet to attract its armature and displace pawl 94. The main lock also can be advanced if there is a broken wire in the stem inasmuch as the interlocking circuit will then be interrupted and no current can flow through the interlocking magnet. If the contacts 102 are out of adjustment or are shown closed by the action function that the main lock cannot be locked.

By reason of the fact that the interlocking circuit is normally kept open by the contacts 96 the current consumed for the interlocking functions is very low inasmuch as no current is consumed except at the times when the main door is being locked or unlocked.

lVhat I claim is:

1. In an interlocking door system in combination with amain door lock and one or more supplementary locks, an interlocking means at the main door lock for preventing the locking thereof whenever the supplementary locks are unlocked, said means including an interlocking circuit extending from the main to the supplementary locks, said means being i ncilective to prevent the locking of the main door upon accidental breaking of the interlockin circuit.

2. In an interlocking door system in combination with a main door lock and interlocking means for preventing the locking of the same including an interlocking circuit extending from the main lock to one or more supplementary locks, means operative when the supplementary locks are unlocked for preventing the locking of the main door, said means being ineffective to prevent looking of the main door upon accidental breaking of the interlocking circuit.

3. In an interlocking door system, a. main door lock, one or more supplementary locks, interlocking means for said main door lock to prevent locking operation thereof, means for controlling said interlocking, means comprising an interlocking circuit extending to said one or more supplementary locks, circuit controlling means dis osed at said supplementary locks, said ast means bein adapted to be closed at all times when sai supplementary locks are unlocked, and said closure of the interlocking circuit preventing the locking of the main door.

4. An interlocking door system comprising a main door lock, an interlocking means therefor, for preventing the locking of the main door lock, an interlocking circuit extending to one or more supplementary locks,

contacts therein operated by said supplemental locks, contacts being normally closed when said locks are unlocked, means operative upon the closing of any of said contacts at any lock for establishing circuit conditions in the interlocking which will subaequently prevent the locking of the main oor.

5. An interlocking door lock stem for preventing the locking of a main oor when one or more supplementary locks are unlocked, comprising in combination, an interlocking magnet, an interlocking circuit including said magnet and extending to and controlled by the supplementary locks, and circuit controlling devices at said, supplementary locks and disposed in the stile in said interlocking circuit ada ted upon closure by said supplementary loc s being unlocked to subsequently establish an interlock condi- 5 tion for the main door lock.

6. An interlocking door lock system for preventing the locking of a main lock when one or more supplementary locks are unlocked, including in combination an inter- 10 looking circuit controlled in part by the supplementary locks, and means operative upon the locking of the main lock for completing the establishing of said interlocking circuit.

7. An interlocking door lock s stem for l preventing the locking of a main ock when one,or more supplementary locks are unlocked, including in combination an interlocking circuit, and means for controlling the same to establish an interlocking condi tion for the main lock conjointly in accordance with the locked or unlocked condition of the supplementary locks and by and upon the attempted locking of the main lock.

8. An interlocking door lock system for preventing the locking of a main lock when one or more suplementary locks are unlocked, comprising in combination with an interlocking circuit, means for controlling said circuit to partially establish the same upon the unlocking of any one of the supplementary locks, and means for completing the establishment of said circuit.

In testimony whereof I hereto aflix my signature.

LE GRAND C. BUSH. 

